Abstrakti
This paper describes improvements to the Nondestructive Testing (NDT) technique recently proposed, based on the use of bacterial cell suspensions to identify micro-and nano-surface defects. New bacterial strains were used with magnetic fields to improve bacteria mobility. Different materials and defect morphologies were tested, including nanoindentation defects, micro-powder injection moulding components and micro-laser welding. Nanoindentations with 0.6 mu m depth and 5.3 mu m side length were successfully detected. Bacterial cells allow identifying different topographic attributes of the surfaces, such as roughness. Cracks of about 0.5 mu m wide and 10 mu m depth in a reference test block Type 1 were successfully detected. (C) 2015 Elsevier Ltd. All rights reserved.
| Alkuperäiskieli | Englanti |
|---|---|
| Sivut | 20-28 |
| Sivumäärä | 9 |
| Julkaisu | NDT & E International |
| Vuosikerta | 78 |
| Numero | March |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - maalisk. 2016 |
| OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Rahoitus
The authors would like to acknowledge Fundacao para a Ciencia e a Tecnologia (FCT, I.P.) for funding the project "Defects Detection in Microfabrication With Bacterial Cells" - (MicroBac) (PTDC/EME-TME/118678/2010). TS and RM acknowledge PEst-OE/EME/UI0667/2014 and UID/EMS/00667/2013. C.C.C.R. de Carvalho acknowledges FCT for financial support under program "FCT Investigator 2013" (IF/01203/2013/CP1163/CT0002) and UID/BIO/04565/2013.
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